Gunpowder-mill roll



' No. 375,889. Patented Jan. 3, 1888.

INVENTOR WITNESSES:

ATTORNEY n. PETERS. Mom Wuhinglom u, c.

UNITED STATES PATENT OFFICE.

PAUL AMBROSE OLIVER, OF OLIVERS MILLS, PENNSYLVANIA.

GUNPOWDER-MILL ROLL.

SPECIFICATION forming part of Letters Patent No. 375,889, dated January3, 188

Application filed June 14, 1887.

T0 ctZZ whom, it may concern.-

Be-it known that I, PAUL AMBROSE OLIVER, a citizen of the United States,residing at Olivers Mills, in the county of Luzerne and State ofPennsylvania, have invented certain. new and useful Improvements inGunpowder-l\Iill Rolls; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to mill rolls used in the manufacture ofgunpowder; and it eonsists in the novel construction and combina tion ofparts, hereinafter fully described and claimed.

It is desirable that gunpowder-mill rolls shall be kept very cool onaccount of the in flammable nature of the materials they operate on Theyare therefore made hollow and are supplied with special appliances forkeeping a constant supply of cold fluidsuch as water-cireulating throughthem.

In the drawings, Figure 1 is a side view of a gunpowder-mill rollconstructed according to this invention. Fig. 2 is an end view of thesame. Fig. 3 is alongitudinal section through the roll, taken on theline 1 1 in Fig. 1. Fig. 4 is a cross-section through the screwed end ofthe rolljournal, taken on the line 2 2 in Fig. 3. Fig. 5 is a detailside view of the internal pipe. Fig. 6 is a detail side view of thestationary supply-pipe and casing, and Fig. 7 is a detail end view ofthe gland.

A is the roll,provided with journals, one of which is hollow and marked1-3. Thev roll itself is hollow and is provided with an internal pipe,I, which extends from the hollow journal B nearly to the solid end ofthe roll. The water or other fluid is forced through the internalpipe,I, passes over the entire internal surface of the roll, and outthrough the openings 1 around the pipe, and between it and the journalB. The pipe I may be cast integral with the roll; but it is preferablyformed separate, and is provided with a head,H,through which the saidopenings 1'' are formed. The head H is driven tightly into thehollowjournal or otherwise firmly secured in it, as shown in Fig. 3,thereby supporting the pipe I centrally within the roll. The head H isformed integral with the pipe I and has the openings Serial No. 241,207.(No model.)

I formed through it around the outside of the said pipe and parallelwith it. The said pipe I and the roll. always revolve together whetherthe head H is formed integral with the roll or forced tightly into it.

0 is a stationary casing outside the roll,provided with the inletpipes Fand outlet-pipes F for the water. One each of these pipes is all that isnecessary to supply the roll; but they are provided in duplicate inorder that several rolls may be'conneoted together in a series, as shownin the gunpowder-mill for which an application for Letters Patent wasfiled June 14, 1887, Serial No. 241,269.

J is a pipe which projects from the casing and communicates with both ofthe pipes F, one end of it being enlarged and dividing the easing intotwo separate parts.

E is a pipe concentric with and inclosing the pipe J. This pipe E alsoprojects from the casing, and it communicates with the pipes F.

The pipe E is provided with the collar 6 atone end, and both the pipes Eand J are placed within the hollow journal B, so that the pipe Jcommunicates with the pipe I, and the pipe E with the openings 1.

K is packing material placed within the hollow journal around the pipeE.

G isagland formediu halves longitudinally and forced down upon the saidpacking by means of the cap D, which engages with a screw-thread uponthe outside of the end of the journal. The gland is formed in halves toenable it to he placed upon the pipe E behind the collar 0. Theserew-cap Dfills the double office of making the packing water-tightaround pipe E and keeping the ends of the pipes E and J in contact withthehead H and pipe I, so that there will be no material escape of fluidat their junction.

The casing, with its pipes, remains stationary, and the roll, with pipeI and the gland and screw'eap, revolves.

What I claim is-- p 1. The combination, with a hollow roll provided witha hollowjournal, an internal pipe extending within the roll, andopenings connecting the hollow journal with the interior of the rollaround the pipe, of two stationary concentric pipes inserted within thesaid hollow journal and communicating with the said internal pipe andthe openings, respectively.

ICO

2. The combination, with a hollow roll provided with a hollow journal,an internal pipe extending within the roll, and openings connecting thehollow journal with the interior of the roll around the pipe, of astationary casing provided with inlet and outlet pipes and with twoconcentric pipes inserted within the hollow journal, thereby connectingthe said inlet and outlet pipes with the said internal pipe and theopenings, respectively.

3. The combination, with a hollow roll provided with a hollowjournal, aninternal pipe extending within the roll, and openings conmeeting thehollowjournal with the interior of the roll around the pipe, of twostationary concentric pipes, the outer provided with a collar on the endinserted within the said hol- 10w journal, said inner and outer pipescommunieating with the said internal pipe and theopenings,respectively,apacking-gland formed 20 in halves longitudinallyand surrounding the outer pipe, and a screw-cap engaging with ascrew-threaded portion on the end of the hollow journal and forcing thepacking-gland within it. 25

In testimony whereof I affix my signature in presence of two witnesses.

PAUL AMBROSE OLIVER.

Witnesses:

(Inns. P. HUNT, GEO. GUNTZ.

